“She’s just fat, that s all there is to it!” Huffman, 45, joked to PEOPLE about Longoria Parker at Saturday’s re-opening of the Mark Taper Forum in Los Angeles.

Rumors of a pregnancy for Longoria Parker, 33, and her husband, Tony Parker, have been circulating all summer after the actress wore a loose-fitting sundress on a shopping trip and later debuted a fuller-than-normal bikini body in July.